'use strict'
// Template version: 1.3.1
// see http://vuejs-templates.github.io/webpack for documentation.

const path = require('path')
const co={};//编译时文件路径
if(process.env.NODE_ENV == 'production'){
	console.log('---生产环境---');
	co.path_u="./";
	co.cacheBusting=false;
	co.cssSourceMap=false;
	co.devtool_mpa='cheap-module-source-map';
	co.productionSourceMap=false;
}else{
	console.log('---开发环境---')
	co.path_u="/";
	co.cssSourceMap=true;
	co.cacheBusting=true;
	co.devtool_mpa='cheap-module-eval-source-map';
	co.productionSourceMap=true;
}
module.exports = {
  dev: {

    // Paths
    assetsSubDirectory: 'static',
    assetsPublicPath:co.path_u,
    proxyTable: {},

    // Various Dev Server settings
    host: 'localhost', // can be overwritten by process.env.HOST
    port: 8080, // can be overwritten by process.env.PORT, if port is in use, a free one will be determined
    autoOpenBrowser: false,
    errorOverlay: true,
    notifyOnErrors: true,
    poll: false, // https://webpack.js.org/configuration/dev-server/#devserver-watchoptions-

    
    /**
     * Source Maps
     */

    // https://webpack.js.org/configuration/devtool/#development
//  devtool: 'cheap-module-eval-source-map',
	devtool: co.devtool_mpa,
    // If you have problems debugging vue-files in devtools,
    // set this to false - it *may* help
    // https://vue-loader.vuejs.org/en/options.html#cachebusting
    cacheBusting: co.cacheBusting,//配合devtool的配置，当给文件名插入新的hash导致清楚缓存时是否生成souce maps，默认在开发环境下为true

    cssSourceMap: co.cssSourceMap //是否开启 cssSourceMap,默认开启
  },

  build: {
    // Template for index.html
    index: path.resolve(__dirname, '../dist/index.html'),

    // Paths
    assetsRoot: path.resolve(__dirname, '../dist'),
    assetsSubDirectory: 'static',
    assetsPublicPath:co.path_u,

    /**
     * Source Maps
     */

    productionSourceMap: co.productionSourceMap,//是否生成.map文件，默认true
    // https://webpack.js.org/configuration/devtool/#production
    devtool: '#source-map',

    // Gzip off by default as many popular static hosts such as
    // Surge or Netlify already gzip all static assets for you.
    // Before setting to `true`, make sure to:
    // npm install --save-dev compression-webpack-plugin
    productionGzip: false,//是否开启 gzip
    productionGzipExtensions: ['js', 'css'],// 需要使用 gzip 压缩的文件扩展名

    // Run the build command with an extra argument to
    // View the bundle analyzer report after build finishes:
    // `npm run build --report`
    // Set to `true` or `false` to always turn it on or off
    bundleAnalyzerReport: process.env.npm_config_report
  }
}
